我正在简单的HTTP服务器上玩Go：
// var tpl = template.Must(template.New("").Funcs(template.FuncMap{"isRegistered": isRegistered}).ParseGlob("templates/*")) // functions will be added later
var tpl = template.Must(template.ParseGlob("templates/*"))
func contact(w http.ResponseWriter, r *http.Request) {
//// defined templates are: "home.html", "layout", "layout.html", "contact.html", "body"
log.Println("in handler: ", tpl.DefinedTemplates())
err := tpl.ExecuteTemplate(w, "contact.html", nil)
if err != nil {
fmt.Println(err) // no error displayed
}
// fmt.Fprintf((w), "write") - This works fine
}
func main() {
log.Println("Serving on 8888 port")
http.HandleFunc("/contact", contact)
http.ListenAndServe(":8888", nil)
}
{{define "layout"}}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>{{.Title}}</title>
<meta name="description" content="{{.Description}}">
<link rel="canonical" href="{{.Canonical}}" />
</head>
<body>
{{template "body" .}}
</body>
</html>
{{end}}
{{define "body"}}
<h1>Contact us page</h1>
<p>
Your name is...
</p>
{{end}}
localhost：8888 / contact返回OK 200和空的正文。我使用了以下示例：https://stackoverflow.com/a/36643663/2110953
但是将来我还需要添加模板功能：var tpl = template.Must（template.New（“”）。Funcs（template.FuncMap {“ isRegistered”：isRegistered}）。ParseGlob（“ templates / *”））
您的contact.html不“呈现”任何内容。它仅定义body模板，但不包含（执行）模板。
要执行模板（在模板内），可以使用{{template}}操作。要定义和执行模板，可以使用{{block}}操作。
{{template "name"}}
The template with the specified name is executed with nil data.
{{template "name" pipeline}}
The template with the specified name is executed with dot set
to the value of the pipeline.
{{block "name" pipeline}} T1 {{end}}
A block is shorthand for defining a template
{{define "name"}} T1 {{end}}
and then executing it in place
{{template "name" pipeline}}
The typical use is to define a set of root templates that are
then customized by redefining the block templates within.
如果您的目标是在所有页面中都具有“固定的”页眉和页脚，那么您必须重组模板。在某处定义一个header和footer模板，并且页面应包括它们作为第一个和最后一个元素。参见How to use a field of struct or variable value as template name?